Pulley mechanism and sliding door and window

Abstract

The utility model discloses a pulley mechanism and a sliding door and window, the pulley mechanism comprises at least one pulley assembly, the pulley assembly comprises a pulley support, the pulley support is provided with a positioning groove and an adjusting groove, the positioning groove is communicated with the adjusting groove, one end of the positioning groove is obliquely arranged downwards relative to the other end of the positioning groove, and the positioning groove has a preset length along the direction of the adjusting groove; the pulley shaft is arranged in the positioning groove in a penetrating manner; the pulley blocks are arranged on the two sides of the pulley shaft and can rotate relative to the pulley shaft; the adjusting piece is arranged in the adjusting groove and can be adjusted in the adjusting groove; when the adjusting piece stretches into the positioning groove, the pulley shaft abuts against the adjusting piece so that the pulley shaft can be kept at the positioning height. According to the pulley assembly structure, the adjusting function is achieved, and meanwhile the rapid and convenient installation procedure is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window structures, and particularly relates to a pulley mechanism and a sliding door and window. Background Art

[0002] In people's daily life, sliding doors and windows are more and more widely used. Manufacturers have an urgent need to realize the rapid assembly of sliding door and window accessories (such as pulley assemblies) and reduce costs.

[0003] However, the pulley assemblies used in sliding doors and windows on the market at present include an outer pulley bracket, an inner pulley bracket, a pulley set and an adjusting screw nut; the pulley set needs to be installed on the inner pulley bracket, fixed and riveted through a pulley shaft, and then the inner pulley bracket with the pulley after riveting is installed on the outer pulley bracket, and riveting is also carried out in the same way. Finally, an adjusting threaded nut is installed at the head of the inner and outer pulley brackets, and flanging and riveting are carried out again. Although the basic functions of the sliding pulley are realized, there are many accessories and many installation processes. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a pulley mechanism and a door and window, aiming at solving the problems of many accessories and many installation processes of the pulley assemblies in the prior art.

[0005] An embodiment of the utility model provides a pulley mechanism, including at least one pulley assembly, and the pulley assembly includes:

[0006] A pulley bracket, on which a positioning groove and an adjusting groove are formed, and the positioning groove communicates with the adjusting groove. One end of the positioning groove is inclined downward relative to the other end of the positioning groove, and the positioning groove has a predetermined length along the direction of the adjusting groove;

[0007] A pulley shaft, passing through the positioning groove;

[0008] A pulley set, arranged on both sides of the pulley shaft and rotatable relative to the pulley shaft;

[0009] An adjusting member, arranged in the adjusting groove and adjustable in the adjusting groove;

[0010] Wherein, when the adjusting member extends into the positioning groove, the pulley shaft abuts against the adjusting member to keep the positioning height of the pulley shaft.

[0011] Optionally, the positioning groove and the adjusting groove are cross - arranged and have a preset cross - angle.

[0012] Optionally, the pulley shaft and the adjusting member are perpendicular to each other.

[0013] Optionally, expansion surfaces are provided on both sides of the positioning groove along the axial direction of the pulley shaft.

[0014] Optionally, the expansion surface is an inclined surface or an arc surface.

[0015] Optionally, the inner wall of the adjustment groove is provided with threads, and the adjustment member is an adjustment screw.

[0016] Optionally, a plurality of pulley assemblies are provided. A connection bracket is provided on each pulley assembly. The connection bracket is provided on the pulley shaft. Connection ends and connected ends are respectively provided at both ends of the connection bracket. Adjacent pulley assemblies are connected through the connection ends and the connected ends of the corresponding connection brackets, so that the pulley assemblies are adjusted synchronously.

[0017] Optionally, the pulley group at least includes a first pulley group and a second pulley group. The pulley shaft at least includes a first pulley shaft and a second pulley shaft. The positioning groove at least includes a first positioning groove and a second positioning groove. The first pulley shaft is disposed in the first positioning groove, and the second pulley shaft is disposed in the second positioning groove. The first pulley group is disposed on both sides of the first pulley shaft, and the second pulley group is disposed on both sides of the second pulley shaft.

[0018] Optionally, the pulley assembly further includes a connecting rod. A connecting rod groove is provided in the pulley bracket. The connecting rod is disposed in the connecting rod groove and can move in the connecting rod groove. A first shaft hole and a second shaft hole are provided on the connecting rod. The first pulley shaft and the second pulley shaft respectively pass through the first shaft hole and the second shaft hole. One end of the connecting rod groove communicates with the adjustment groove. When the adjustment member extends into the positioning groove, the pulley shaft abuts against the connecting rod, so that the pulley shaft maintains the positioning height.

[0019] An embodiment of the present invention further provides a sliding door and window, including the pulley mechanism as described above.

[0020] In the pulley mechanism of the embodiment of the present invention, by providing a positioning groove and an adjustment groove on the pulley bracket, one end of the positioning groove communicates with the adjustment groove, and the other end of the positioning groove is inclined downward relative to one end of the positioning groove. The adjustment member can be adjusted in or out of the adjustment groove. When the adjustment member is adjusted in the direction close to the positioning groove, the adjustment member abuts the pulley shaft against the other end of the positioning groove; when the adjustment member is adjusted out of the positioning groove, the pulley group forces the pulley shaft to abut against one end of the positioning groove and contact the adjustment member. Such a pulley assembly structure not only satisfies the adjustment function but also can reduce the installation steps and realize a fast and convenient installation process. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is an exploded structural schematic diagram of the pulley assembly provided by the embodiment of the present utility model;

[0023] Figure 2 It is a structural schematic diagram of the pulley assembly when the adjusting member is adjusted into the adjusting groove provided by the embodiment of the present utility model;

[0024] Figure 3 It is a structural schematic diagram of the pulley assembly when the adjusting member is adjusted out of the adjusting groove provided by the embodiment of the present utility model;

[0025] Figure 4 It is a structural schematic diagram of the pulley assembly provided by the embodiment of the present utility model;

[0026] Figure 5 It is a sectional structural schematic diagram of the pulley assembly provided by the embodiment of the present utility model;

[0027] Figure 6 It is a structural schematic diagram of the main pulley group provided by the embodiment of the present utility model;

[0028] Figure 7 It is a sectional structural schematic diagram of the main pulley group provided by the embodiment of the present utility model;

[0029] Figure 8 It is a structural schematic diagram of the auxiliary pulley group provided by the embodiment of the present utility model.

[0030] Figure 9 It is a structural schematic diagram of multiple pulley assemblies provided by the embodiment of the present utility model;

[0031] Figure 10 It is an exploded structural schematic diagram of the pulley assembly with an extended length of the pulley bracket provided by the embodiment of the present utility model;

[0032] Figure 11 It is an exploded structural schematic diagram of the pulley assembly with an extended length of the pulley bracket from another perspective provided by the embodiment of the present utility model;

[0033] Figure 12 It is a structural schematic diagram of the pulley assembly with an extended length of the pulley bracket when the adjusting member is adjusted into the adjusting groove provided by the embodiment of the present utility model;

[0034] Figure 13Schematic diagram of the structure of the pulley assembly when the adjusting member for lengthening the length of the pulley bracket provided by the embodiment of the present utility model is adjusted out of the adjusting groove;

[0035] Figure 14 Another exploded structure diagram of the pulley assembly for lengthening the length of the pulley bracket provided by the embodiment of the present utility model;

[0036] Figure 15 Schematic cross-sectional structure diagram of the pulley mechanism and the sliding and folding door and window provided by the embodiment of the present utility model.

[0037] Description of the markings in the figure:

[0038] 1. Pulley assembly; 11. Pulley bracket; 111. Positioning groove; 1111. Expansion surface; 1112. First positioning groove; 1113. Second positioning groove; 112. Adjusting groove; 113. Link groove; 12. Pulley shaft; 121. First pulley shaft; 122. Second pulley shaft; 13. Pulley set; 131. First pulley set; 132. Second pulley set; 14. Adjusting member; 15. Connecting bracket; 151. Connecting end; 152. Connected end; 153. First connecting plate; 154. Second connecting plate; 155. Third connecting plate; 16. Link; 161. First shaft hole; 162. Second shaft hole; 163. Link inclined groove; 164. Link shaft.

[0039] 2. Profile track;

[0040] 3. Door frame profile. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0042] It should be understood that when used in this specification and the appended claims, the terms "comprises" and "comprising" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0043] It should also be understood that the terms used in the specification of the present utility model are merely for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0044] It should be further understood that the term "and / or" used in the specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0045] Please refer to Figure 1 , an embodiment of the present utility model provides a pulley mechanism, including at least one pulley assembly 1. The pulley assembly 1 includes: a pulley bracket 11, on which a positioning groove 111 and an adjustment groove 112 are formed, and the positioning groove 111 communicates with the adjustment groove 112. One end of the positioning groove 111 is inclined downward relative to the other end of the positioning groove 111, and the positioning groove 111 has a predetermined length along the direction of the adjustment groove 112; a pulley shaft 12, passing through the positioning groove 111; a pulley set 13, arranged on both sides of the pulley shaft 12 and capable of rotating relative to the pulley shaft 12; an adjusting member 14, arranged in the adjustment groove 112 and capable of being adjusted in or out in the adjustment groove 112; wherein, when the adjusting member 14 extends into the positioning groove 111, the pulley shaft 12 abuts against the adjusting member 14 to keep the pulley shaft 12 at a positioning height.

[0046] In this embodiment, as can be seen from Figure 1 , the pulley set 13 includes an inner bearing of the innermost ring and a pulley sleeved on the inner bearing. The pulley is rotatably arranged on the inner bearing, and the inner bearing is fixed on the pulley shaft 12, realizing the relative rotation of the pulley set 13 around the pulley shaft 12.

[0047] When the adjusting member 14 is adjusted in the direction close to the positioning groove 111, the tail end (the end close to the pulley shaft 12) of the adjusting member 14 abuts against the pulley shaft 12 downward, and the pulley set 13 moves downward together with the pulley shaft 12 (as shown in Figure 2 ). At this time, the overall height of the pulley assembly 1 will be increased, and the pulley shaft 12 is abutted and fixed, playing a fixing role; when the adjusting member 14 is adjusted out in the direction away from the positioning groove 111, due to the gravity of the door leaf, the pulley bracket 11 will be pressed downward. Then, due to the contact and force between the pulley set 13 on the pulley shaft 12 and the push-pull track, the pulley shaft 12 is abutted to one end of the positioning groove 111 and contacts the adjusting member 14, and the overall height of the pulley assembly 1 will be decreased. At the same time, the adjusting member 14 will abut against the pulley shaft 12, playing a positioning role (as shown in Figure 3 ).

[0048] The process of the adjusting member 14 moving in or out of the adjusting groove 112 as shown above satisfies the adjustable function of the pulley assembly 1, allowing the user to flexibly adjust the position and state of the pulley shaft 12 according to needs, while ensuring that the pulley shaft 12 is stably supported within the positioning groove 111.

[0049] During specific installation, the pulley set 13 (specifically, the inner bearing) can be first fixed and riveted on both sides of the pulley bracket 11 through the pulley shaft 12, and then the adjusting member 14 is screwed into the adjusting groove 112 to complete the assembly process of the pulley assembly 1. This design uses fewer components, reduces the installation steps, and realizes a fast and convenient installation process.

[0050] In this embodiment, the adjusting groove 112 is horizontally arranged, and the positioning groove 111 intersects with the adjusting groove 112 and has a preset intersection angle. Preferably, an installation portion is provided on the pulley bracket 11, and both the positioning groove 111 and the adjusting groove 112 are arranged on the installation portion. Since the other end of the positioning groove 111 is inclined downward relative to one end of the positioning groove 111 and has a preset length, the positioning groove 111 will form a long inclined groove with a certain length. In specific design, the adjusting groove 112 can also be arranged as an inclined structure. One end of the positioning groove 111 communicates with the adjusting groove 112. One end of the positioning groove 111 and the adjusting groove 112 are on the same horizontal plane of the pulley bracket 11, and the other end of the positioning groove 111 is inclined downward relative to one end of the positioning groove 111. Therefore, the positioning groove 111 intersects with the adjusting groove 112 and has a preset intersection angle (that is, there is a certain included angle between the positioning groove 111 and the adjusting groove 112), and this included angle can be an acute angle, a right angle or an obtuse angle.

[0051] Furthermore, as Figure 4 shown, the pulley shaft 12 and the adjusting member 14 are perpendicular to each other. That is, the direction in which the adjusting member 14 is inserted into the adjusting groove 112 is perpendicular to the direction in which the pulley shaft 12 is inserted into the positioning groove 111. Since the pulley shaft 12 and the adjusting member 14 are perpendicular to each other, during the process of the adjusting member 14 moving in or out of the horizontal adjusting groove 112, the movement of the pulley shaft 12 in the positioning groove 111 will be associated. This perpendicular relationship helps to achieve precise adjustment of the pulley shaft 12, enabling the pulley mechanism to meet the design requirements.

[0052] Furthermore, as Figure 5As shown, the positioning groove 111 is provided with expansion surfaces 1111 on both sides of the axial direction of the pulley shaft 12. Due to the current production process, the profile track may have a height difference, or the profile track may also be worn and deformed during long-term use, resulting in a height difference problem. Therefore, it is difficult to avoid the pulley block 13 encountering a height difference during the sliding process. This situation easily causes the pulley block 13 set on both sides of the pulley shaft 12 to be unable to bear the load and force well. Therefore, in this embodiment, expansion surfaces 1111 are provided on both sides of the positioning groove 111 along the axial direction of the pulley shaft 12. The existence of the expansion surface 1111 enables the pulley block 13 to automatically adapt to the change of the track height difference through the guiding effect of the expansion surface 1111 when contacting the profile track with a height difference, so that the pulley shaft 12 is kept in a more stable stress state, which helps to disperse and balance the load borne by the pulley block 13 and avoid damage or failure caused by uneven force.

[0053] Specifically, the expansion surface 1111 is an inclined surface or an arc surface. In this embodiment, the inclined surface has a clear guiding function, which can guide the pulley block 13 to adjust its position when a height difference occurs, reduce sudden impact and offset, and enable the pulley block 13 to better adapt to profile rails of different shapes and heights. The arc surface design provides a smoother transition, which can more effectively disperse the stress concentration of the pulley block 13 when it is subjected to force, and reduce the friction and resistance of the pulley block 13 during movement. The above embodiment can not only solve the problem of height difference when the pulley block 13 slides in the track caused by the production process or the use process, but also meet the load-bearing function of the pulley assembly 1, so that the pulley mechanism can adapt to different load conditions.

[0054] Furthermore, the inner wall of the adjusting groove 112 is provided with threads, and the adjusting member 14 is an adjusting screw. In order to facilitate the adjustment of the adjusting member 14 in and out of the adjusting groove 112, it is preferred that the inner wall of the adjusting groove 112 is provided with a threaded structure, so that the adjusting screw can rotate more smoothly in the adjusting groove 112, and the adjusting screw can be kept in the current position after being adjusted to the right position, thereby resisting the pulley shaft 12.

[0055] It should be noted that the adjustment groove 112 and the adjustment member 14 can also be connected in a snap-fit manner. When the adjustment member 14 needs to be adjusted into the adjustment groove 112, it can be directly snapped in. When the adjustment member 14 needs to be adjusted out of the adjustment groove 112, the adjustment member 14 is brought into a disengaged state. The adjustment groove 112 can also be designed as a chute with a certain length and width, and the adjustment member 14 is a slider that matches it. When adjustment in is required, the slider can be smoothly pushed in along the direction of the chute. When adjustment out is required, it can be slid out from the other end of the chute. A spring locking mechanism can also be built into the adjustment groove 112. When the adjustment member 14 is inserted into the adjustment groove 112, the spring locking mechanism will automatically lock the adjustment member 14 in the groove. When adjustment out is required, by pressing or rotating a specific release button or handle, the spring locking mechanism is disabled, so that the adjustment member 14 can be released from the adjustment groove 112 and taken out.

[0056] In another embodiment, as Figures 6 to 8 shown, a plurality of pulley assemblies 1 are provided. A connection bracket 15 is provided on each pulley assembly 1. The connection bracket 15 is arranged on the pulley shaft 12. A connection end 151 and a connected end 152 are respectively arranged at both ends of the connection bracket 15. Adjacent pulley assemblies 1 are connected through the connection end 151 and the connected end 152 of the corresponding connection bracket 15, so as to synchronously adjust each pulley assembly 1.

[0057] Specifically, the connection bracket 15 includes a first connection plate 153, a second connection plate 154, and a third connection plate 155 connected between the first connection plate 153 and the second connection plate 154. The first connection plate 153 and the second connection plate 154 are parallel to each other, and usually have mounting holes or slots designed thereon, so that the first connection plate 153 and the second connection plate 154 are fixedly arranged on the pulley shaft 12. The connection end 151 and the connected end 152 can be arranged on the first connection plate 153 or on the second connection plate 154. Adjacent pulley assemblies 1 can be connected through the connection end 151 and the connected end 152 of the corresponding connection bracket 15 to achieve synchronous adjustment of each pulley assembly 1.

[0058] The shape of the connection bracket 15 is generally U-shaped. Such a design enables the connection bracket 15 to be stably arranged on the pulley shafts 12 on both sides of the connection.

[0059] Fixing the connecting bracket 15 on the pulley shaft 12 serves two purposes. On the one hand, it plays an adjusting role. When the adjusting member 14 is adjusted in or out of the adjusting groove 112, the connecting bracket 15 will also move along with the movement of the pulley shaft 12, so that the connecting bracket 15 is fixed at different height positions. On the other hand, it is used to connect two adjacent pulley assemblies 1. Specifically, the connected end 152 of the nth pulley assembly 1 is connected to the connecting end 151 of the (n - 1)th pulley assembly 1, and the connecting end 151 of the nth pulley assembly 1 is connected to the connected end 152 of the (n + 1)th pulley assembly 1. In specific implementation, the height of the bracket of the pulley assembly 1 (pulley bracket 11 or connecting bracket 15) can be adjusted first, and then the connecting brackets 15 are connected. That is to say, the load-bearing requirement can be improved by increasing the number of pulley assemblies 1.

[0060] For the convenience of description, the pulley assembly 1 in Figure 6 can be named the main pulley assembly, and the pulley assembly 1 in Figure 8 can be named the auxiliary pulley assembly. Among them, the main pulley assembly is provided with the adjusting member 14, while the auxiliary pulley assembly may not be provided with the adjusting member or the adjusting member is not inserted into the positioning groove 111. At this time, when adjusting the height of the bracket, only the height of the bracket of the main pulley assembly needs to be adjusted. After the adjustment is in place, the connected end 151 of the connecting bracket 15 on the main pulley assembly is used to connect the connected end 152 of the connecting bracket 15 on the auxiliary pulley assembly. The height of the bracket of the auxiliary pulley assembly is also adjusted and fixed at the same bracket height as the main pulley assembly. Then, new auxiliary pulley assemblies can be continuously connected after the auxiliary pulley assembly according to needs. After the assembly is completed, it can be placed in the profile track. In this case, the bracket height will be determined by the main pulley assembly, and the force required to maintain the bracket height of each pulley assembly is borne by the adjusting member 14 of the main pulley assembly. Since the adjusting member 14 is not provided, there is no need to adjust the auxiliary pulley assembly, and only the main pulley assembly needs to be adjusted. After the adjustment is completed, the auxiliary pulley assembly is connected to the main pulley assembly (as shown in Figure 9 ). There can be multiple groups of auxiliary pulley assemblies, and the connected end 151 and the connected end 152 of the connecting bracket 15 are connected in sequence. That is to say, when the requirement of increasing the number of auxiliary pulley groups 13 to improve the load-bearing is met, the height of the pulley group 13 can be adjusted synchronously, simplifying the installation steps and improving the installation efficiency.

[0061] In another embodiment, as shown in Figure 10 and Figure 11As shown, the pulley block 13 includes at least a first pulley block 131 and a second pulley block 132, the pulley shaft 12 includes at least a first pulley shaft 121 and a second pulley shaft 122, the positioning groove 111 includes at least a first positioning groove 1112 and a second positioning groove 1113. The first pulley shaft 12 is disposed through the first positioning groove 1112, the second pulley shaft 12 is disposed through the second positioning groove 1113. The first pulley block 131 is disposed on both sides of the first pulley shaft 12, and the second pulley block 132 is disposed on both sides of the second pulley shaft 12.

[0062] In this embodiment, the length of the pulley bracket 11 is increased by the processing technology, so that the number of pulley blocks 13 can be increased, thereby improving the load-bearing capacity of the whole set of pulleys.

[0063] Furthermore, the pulley assembly 1 further includes a connecting rod 16. A connecting rod groove 113 is provided in the pulley bracket 11. The connecting rod 16 is disposed in the connecting rod groove 113 and can move in the connecting rod groove 113. The connecting rod 16 is provided with a first shaft hole 161 and a second shaft hole 162. The first pulley shaft 121 and the second pulley shaft 122 are respectively disposed through the first shaft hole 161 and the second shaft hole 162. One end of the connecting rod groove 113 communicates with the adjusting groove 112.

[0064] Since one end of the connecting rod groove 113 communicates with the adjusting groove 112, and the connecting rod groove 113 also communicates with the first positioning groove 1112 and the second positioning groove 1113, therefore, the connecting rod groove 113 communicates with the first positioning groove 1112, the second positioning groove 1113 and the adjusting groove 112. During the process of adjusting the first pulley shaft 121 and the second pulley shaft 122 by the adjusting member 14, only one adjusting member 14 is needed for adjustment.

[0065] In this embodiment, the first pulley shaft 121 and the second pulley shaft 122 are connected by the connecting rod 16 at the same time. This connection enables the pulley block 13 to achieve the function of synchronous height adjustment. The first pulley shaft 121 and the second pulley shaft 122 are preferably fixedly connected in the first shaft hole 161 and the second shaft hole 162, so that the two pulley shafts can be kept in the corresponding shaft holes, realizing more stable rotation of the pulley block 13.

[0066] Such as Figure 12 and Figure 13As shown in the figure, when the adjusting member 14 is adjusted towards the positioning groove 111, the adjusting member 14 will first abut against one end of the connecting rod 16 until the connecting rod 16 drives the first pulley shaft 121 and the second pulley shaft 122 to move downward, so that the first pulley shaft 121 and the second pulley shaft 122 are fixed at the positioning height of their respective positioning grooves 111, playing a positioning role. At the same time, the connecting rod 16 will also move downward with the first pulley shaft 121 and the second pulley shaft 122. At this time, the overall height of the pulley set 13 will be increased. When the adjusting member 14 is adjusted away from the positioning groove 111, due to the gravity of the door leaf, the pulley bracket 11 will be pressed downward, and the overall height of the pulley set 13 will be decreased. At the same time, the adjusting member 14 will first abut against one end of the connecting rod 16, and the other end of the connecting rod 16 will abut against the first pulley shaft 121 and the second pulley shaft 122, so that the first pulley shaft 121 and the second pulley shaft 122 are fixed at the positioning height of their respective positioning grooves 111, playing a positioning role.

[0067] It should be noted that in the pulley bracket 11 with an increased length, only one adjusting groove 112 and one adjusting member 14 can be provided for adjustment, or one adjusting groove 112 and one adjusting member 14 can be provided on each of the opposite side walls of the pulley bracket 11 for adjustment, so as to achieve the effect of synchronous adjustment from different directions.

[0068] Furthermore, as Figure 14 shown in the figure, a connecting rod inclined groove 163 is formed on the connecting rod 16, and a connecting rod shaft 164 is also included which is inserted into the connecting rod inclined groove 163. When the adjusting member 14 is adjusted in or out in the adjusting groove 112, the adjusting member 14 will first abut against one end of the connecting rod 16, and the connecting rod shaft 164 will move downward together with the first pulley shaft 121 and the second pulley shaft 122, so that the connecting rod shaft 164 is fixed at the positioning height of the connecting rod inclined groove 163, playing a positioning role; at the same time, the effect of synchronous adjustment from different directions can also be achieved.

[0069] Please refer to Figure 15 , the embodiment of the present utility model further provides a sliding door and window, which includes a profile track 2, a door frame profile 3, and the pulley mechanism as described in any one of the above.

[0070] In the description of the specification, the various embodiments are described in a progressive manner. The key points of each embodiment are the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part. It should be noted that for those of ordinary skill in the art in the technical field of the present invention, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

[0071] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion.

[0072] Comprising, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

Claims

1. A pulley mechanism, characterized in that: The invention comprises at least one pulley assembly, wherein the pulley assembly comprises: A pulley bracket, wherein a positioning groove and an adjusting groove are formed on the pulley bracket, and the positioning groove is connected to the adjusting groove, one end of the positioning groove is inclined downward relative to the other end of the positioning groove, and the positioning groove has a predetermined length along the direction of the adjusting groove; A pulley shaft is inserted into the positioning groove; A pulley block is arranged on both sides of the pulley shaft and can rotate relative to the pulley shaft; An adjusting member, disposed in the adjusting slot and adjustable in the adjusting slot; Wherein, when the adjusting member extends into the positioning groove, the pulley shaft abuts against the adjusting member, so that the pulley shaft maintains the positioning height.

2. The pulley mechanism according to claim 1, characterized in that: The positioning slot and the adjusting slot are cross-arranged and have a preset cross-angle.

3. The pulley mechanism according to claim 1, characterized in that: The pulley shaft and the adjusting member are perpendicular to each other.

4. The pulley mechanism according to claim 1, characterized in that: The positioning groove is provided with expansion surfaces on both sides along the axial direction of the pulley shaft.

5. The pulley mechanism according to claim 4, characterized in that: The expansion surface is an inclined surface or a curved surface.

6. The pulley mechanism according to claim 1, characterized in that: The inner wall of the adjusting groove is provided with threads, and the adjusting member is an adjusting screw.

7. The pulley mechanism according to claim 1, characterized in that: There are multiple pulley assemblies, each of which is provided with a connecting bracket, which is arranged on the pulley shaft, and the two ends of the connecting bracket are respectively provided with a connecting end and a connected end, and adjacent pulley assemblies are connected via the connecting ends and the connected ends corresponding to the connecting brackets, so that the pulley assemblies can be adjusted synchronously.

8. The pulley mechanism according to claim 1, characterized in that: The pulley group includes at least a first pulley group and a second pulley group, the pulley shaft includes at least a first pulley shaft and a second pulley shaft, the positioning groove includes at least a first positioning groove and a second positioning groove, the first pulley shaft is inserted into the first positioning groove, the second pulley shaft is inserted into the second positioning groove, the first pulley group is arranged on both sides of the first pulley shaft, and the second pulley group is arranged on both sides of the second pulley shaft.

9. The pulley mechanism according to claim 8, characterized in that: The pulley assembly also includes a connecting rod, a connecting rod groove is provided in the pulley bracket, the connecting rod is arranged in the connecting rod groove and can move in the connecting rod groove, a first axial hole and a second axial hole are provided on the connecting rod, the first pulley shaft and the second pulley shaft are respectively inserted into the first axial hole and the second axial hole, one end of the connecting rod groove is connected with the adjusting groove, and when the adjusting member extends into the positioning groove, the pulley shaft abuts against the connecting rod to enable the pulley shaft to maintain the positioning height.

10. A sliding door and window, characterized in that: Comprising the pulley mechanism described in any one of claims 1-9.

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